On Mon, Mar 19, 2018 at 03:35:07PM +0800, Lai Jiangshan wrote: > The original code allows destroying the pool when the pool > is still active in manage_workers(). A synchronization > mechanism between manage_workers() and pool destruction > was added for protection. > > This patch simply makes manage_workers() and pool destruction > exclusive by getting an indirect refcount of the pool in > manage_workers(). "indirect" means it gets a refcount of > the first involved pwq which holds a refcount of the pool. > This refcount can prevent the pool from being destroyed. > > The original synchronization mechanism (wq_manager_wait) > is also removed.
Hmm... idk, this is more indirect and subtle than the existing code and it's not like the existing code was overly complicated. Thanks. -- tejun
